Coherent network analysis technique for discriminating gravitational-wave bursts from instrumental noise
Abstract
The sensitivity of current searches for gravitational-wave bursts is limited by non-Gaussian, nonstationary noise transients which are common in real detectors. Existing techniques for detecting gravitational-wave bursts assume the output of the detector network to be the sum of a stationary Gaussian noise process and a gravitational-wave signal. These techniques often fail in the presence of noise nonstationarities by incorrectly identifying such transients as possible gravitational-wave bursts. Furthermore, consistency tests currently used to try to eliminate these noise transients are not applicable to general networks of detectors with different orientations and noise spectra. In order to address this problem we introduce a fully coherent consistency test that is robust against noise nonstationarities and allows one to distinguish between gravitational-wave bursts and noise transients in general detector networks. This technique does not require any a priori knowledge of the putative burst waveform.
Additional Information
©2006 The American Physical Society (Received 1 May 2006; published 12 October 2006) The authors wish to thank Malik Rakhmanov for useful comments. This work was performed under partial funding from the following NSF Grants No. PHY-0107417, No. 0140369, No. 0239735, No. 0244902, No. 0300609, and No. INT-0138459. A. Searle was supported by the Australian Research Council and the LIGO Visitors Program. L. Stein was supported in part by an NSF REU Site grant. Simulations were performed on the Australian Partnership for Advanced Computing's National Facility under the Merit Allocation Scheme. For M. Tinto, the research was also performed at the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. This document has been assigned LIGO Laboratory document number LIGO-P060009-02-E.Files
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Additional details
- Eprint ID
- 6192
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- CaltechAUTHORS:CHAprd06
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2006-11-28Created from EPrint's datestamp field
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2021-11-08Created from EPrint's last_modified field